// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.GWT.forms.client.components.nonpublic;

import org.litesoft.GWT.client.widgets.*;
import org.litesoft.GWT.client.widgets.nonpublic.*;

import com.google.gwt.user.client.ui.*;

public class WidgetStruct implements HasAlignment {
    protected Widget mWidget;
    protected boolean mSpacer = false;

    protected boolean mStretchableHorizontally = false;
    protected boolean mFloodsX = false;
    protected HorizontalAlignmentConstant mHorizontalAlignment = null;

    protected boolean mStretchableVertically = false;
    protected boolean mFloodsY = false;
    protected VerticalAlignmentConstant mVerticalAlignment = null;

    public WidgetStruct( Widget pWidget ) {
        mWidget = pWidget;
        if ( pWidget instanceof ISizeableWidget ) {
            ISizeableWidget w = (ISizeableWidget) pWidget;
            mStretchableHorizontally = w.getWidthHelper().isStretchable();
            mStretchableVertically = w.getHeightHelper().isStretchable();
            mSpacer = (pWidget instanceof SizeableSpacer);
        }
    }

    public Widget getWidget() {
        return mWidget;
    }

    public boolean isSpacer() {
        return mSpacer;
    }

    public boolean isStretchableHorizontally() {
        return mStretchableHorizontally;
    }

    public boolean isFloodsX() {
        return mFloodsX;
    }

    public boolean hasHorizontalAlignment() {
        return (mHorizontalAlignment != null);
    }

    @Override
    public HorizontalAlignmentConstant getHorizontalAlignment() {
        return mHorizontalAlignment;
    }

    @Override
    public void setHorizontalAlignment( HorizontalAlignmentConstant align ) {
        throw new UnsupportedOperationException( "HorizontalAlignment auto determined" );
    }

    public boolean isStretchableVertically() {
        return mStretchableVertically;
    }

    public boolean isFloodsY() {
        return mFloodsY;
    }

    public boolean hasVerticalAlignment() {
        return (mVerticalAlignment != null);
    }

    @Override
    public VerticalAlignmentConstant getVerticalAlignment() {
        return mVerticalAlignment;
    }

    @Override
    public void setVerticalAlignment( VerticalAlignmentConstant align ) {
        throw new UnsupportedOperationException( "VerticalAlignment auto determined" );
    }

    public void center() {
        if ( !isStretchableHorizontally() && !isFloodsX() && (mHorizontalAlignment == null) ) {
            mHorizontalAlignment = ALIGN_CENTER;
        }
        if ( !isStretchableVertically() && !isFloodsY() && (mVerticalAlignment == null) ) {
            mVerticalAlignment = ALIGN_MIDDLE;
        }
    }
}